Drying apparatus.



No. 708,5l6. Patented Sept.'9, I902.

H. C. BAUGHMA'N.

DRYING APPARATUS (Application filed Jan. 9, 1902.)

(No Model.)

UNITE ra'rns ATENT union.

HENRY O. BAUGHMAN, OF BALTIMORE, MARYLAND, ASSIGNOR TO ELLA M.BAUGIIMAN, OF BALTIMORE, MARYLAND.

DRYING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 708,516, datedSeptember 9, 1902. Application filed January 9, 1902. Serial No. 89,036.(No model.)

To aZZ whom, it may concern.-

. Be it known that I, HENRY G. BAUGHMAN, a citizen of the United States,residing at Baltimore, in the State of Maryland, have invented certainnew and useful Improvements in Drying Apparatus 5 and I do declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

The invention relates to drying apparatus, more particularly designedfor drying plastic materialsuch, for instance, as whiting.

The object of the invention is to provide an apparatus of this characterwhich shall be simple of construction, durable in use, comparativelyinexpensive of production, and efficient in operation.

With this and other objects in view the invention consists of certainnovel features of construction, combination, and arrangement of parts,which will be hereinafter more fully described, and particularly pointedout in the appended claims.

In the accompanying drawings, Figure 1 is a side elevation of anapparatus embodying my invention, and Fig. 2 is a verticalcrosssectional view.

The apparatus comprises a drum, preferably, but not necessarily,cylindrical in form and provided at its ends with heads 2 and 3, thediameters of which are greater than the drum and are supported to turnon rollers 5, supported in bearing-blocks 6. The side of the drum ismade up of pockets 7, alternating with hot-air spaces 8. The pockets areaccessible from without, while the hot-air spaces communicate with theinterior of the drum, which is adapted to be supplied with hot airthrough a pipe 9. The drum is preferably formed of thin sheet metalcapable of being bent or corrugated to produce the pockets 7 and thehot-air spaces 8, and, as shown, these pockets and hot-air spaces arearranged in annular form.

10 represents in conventional form a feedhopper for successivelycharging the pockets as they rotate past the hopper.

During the rotation of the drum the mate rial therein will becomethoroughly dried and will fall out of the pockets by gravity when thepockets arrive at the point marked a.

This is evident for the reason that when the material to be dried is letinto the pockets it is in a plastic state, and when it reaches'the pointmarked a, it having become thoroughly dried, will naturally shrink andpull away from the sides of the pockets and drop therefrom.

Any suitable means may be employed for rotating the drumsuch, forinstance, as a worm 11, meshing with a worm-wheel 12, secured to thedrum on its outer side near one end, as shown in Fig. 1.

From the foregoing description, taken in connection with theaccompanying drawings, the construction, mode of operation, and advantages of the invention will be readily understood without requiringan extended explanation.

Various changes in the form, proportion, and details of construction maybe made within the scope of the invention without departing from thespirit or sacrificing any of the advantages thereof.

Having thus described my invention, what I claim, and desire to secureby Letters Patent,-is

1. In a drying apparatus, the combination with a rotary drum comprisinga series of alternating drying-pockets and hot-air spaces, said pocketsopening to the outside air and said hot-air spaces communicating withthe interior of the drum, of means arranged for supplying said pocketswith material to be dried, substantially as set forth.

2. A drying apparatus comprising a drum formed on its outer side withpockets and on its inner side with hot-air spaces communicating with theinterior of the drum and arranged alternately with the pockets incombination with means arranged for supplying said pockets with materialto be dried, substantially as set forth.

3. A drying apparatus comprising a corrugated drum formed withalternating dryingpockets and hot-air spaces, the pockets beingaccessible from without and the hot-air spaces communicating with theinterior of the drum, of means arranged for supplying said pockets withmaterial to be dried substantially as set forth.

4. A drum consisting of a cylindrical corrugatedbody to form alternatingdrying-pockets and hot-air spaces, the said pockets being accessiblefrom without and the hot-air spaces communicating with the interior ofthe drum, heads secured to the ends of thedrum and of greater diameterthan the drum, roller-bearings upon which said heads are supported andmeans arranged for supplying said pockets with material to be dried, andmeans for rotating the drum, substantially as set forth.

5. A drier comprising a cylindrical drum formed with alternatingdrying-pockets and hot-air spaces and provided at its ends with heads,said hot-air spaces communicating With the interior of the drum and saidpockets being accessible from without, substantially as set forth.

6. In a drying apparatus, a hollow rotary drum having a corrugatedperipheral wall forming a series of alternating drying-pockets andhot-air spaces, said pockets opening to the atmosphere and said hot-airspaces communicating with the interior of the drum, substantially as setforth.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses. v

H. O. BAUGHMAN.

Witnesses:

R. O. BAUGHMAN, BENJ. G. OoWL.

